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$45 USD / hour
koryukivka distr., ukraine
$45 USD / hour
It's currently 10:23 AM here
Joined December 21, 2015
5 Recommendations

Oleksii S.


5.0 (90 reviews)
$45 USD / hour
koryukivka distr., ukraine
$45 USD / hour
Jobs Completed
On Budget
On Time
Repeat Hire Rate

Independent researcher, statistician, data analyst

I have more than 20 years experience in data analysis in the different areas (behavior sciences, economic/finance, medicine and other). I have strong statistical, economical and and psychology background. I work with SPSS, Eviews, Mplus, Excel, Stata, R, and other statistical programs. Since 2000, I have completed many projects related to analysis of different data, solving of the statistical problems, survey analysis, stock data analysis, econometric modelling and so on. I support students, post-graduated/doctoral students, independent researchers/scholars, investors, businessmen, consulting firms and so on. I have an experience in market analysis, business analysis, SEM modelling, survey analysis, CFA (MG CFA), regression, factor analysis, working with time-series, survival analysis data manipulation and presentation. I guarantee 100% and quality execution of your project. I can work 40 hours/week.
Freelancer Statisticians Ukraine

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Portfolio Items

Time series analysis, regression, stationary testing ARIMA, ARCH, GARCH models and other financial analysis. EViews or R can be used for these purposes.
Financial data analysis using EViews
Confirmatory Factor Analysis (CFA) + Structural Equation Modelling (SEM), Multigroup CFA using Amos, Mplus, R or Stata.
Multigroup analysis (invariance testing). PLS approach to SEM using R
Structural Equation Modelling+Confirmatory Factor Analysis
Sales probability prediction and lead scoring based on the probability of sales. R language and excel. Random forest classification model + logistic regression were used.
Machine learning - sales probability prediction (R language)
Cluster analysis, client segmentation, latent class analysis,  dimension reduction using exploratory factor analysis, principal component analysis and other technics.  R, SPSS, Stata.
Cluster and principal component analysis, factor analysis
Kaplan-Meier plots to visualize survival curves, Log-rank test to compare the survival curves of two or more groups, Cox proportional hazards regression, Andersen-Gill Regression Model, comparison pre- and post intervention data, comparison between experimental and control group
Survival analysis (other analysis of medical data)
Analysis environmental, medical, psychological and other data with top-level quality (supporting researchers in their scientific investigation to submit articles in scientific journal or for PhD theses/other scientific papers)
Statistical support for researchers


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Showing 1 - 5 out of 50+ reviews
Filter reviews by: 4.8
$250.00 USD
Alex is a master in his field and diligent in finding reliable answers. My research project's quality is enhanced because of the work Alex did.
Research Excel Statistics Statistical Analysis SPSS Statistics
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Flag of Kobus M. @KobusMeyburgh
17 days ago
$250.00 USD
Alex is professional and expertise in medical research.
PHP Scientific Research Statistics Statistical Analysis SPSS Statistics
Flag of Maya A. @Mayasaid101988
3 months ago
$300.00 USD
After successfully completing 5 separate projects, I can say that he is, as usual, ahead of time and on budget and delivers professional analysis. Hire him directly and do not waste your time trying others. I have worked with 5 statisticians before Alex and can say simply that Alex's quality of work and ethics are beyond comparisons. Thank you again Alex and for sure not the last project.
Data Processing Statistics Report Writing Research Writing
+1 more
Flag of Manal H. @MHA79
1 year ago
$300.00 USD
Strongly recommend him. If you want your job to be done in a professional way, just hire him and you won’t regret it. Thank you Alex
Data Processing Statistics Report Writing Research Writing
+1 more
Flag of Manal H. @MHA79
1 year ago
$600.00 AUD
Oleksii provided a detailed description of what could be done before taking the project on, which is critical to ensure realistic expectations. Highly recommended.
Data Processing Statistics Report Writing Research Writing
+1 more
Flag of Benjamin W. @Meme300
1 year ago

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Top Skills

Statistics 80 Statistical Analysis 77 Research Writing 61 Report Writing 57 Data Processing 52

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